Raspberry Pi 4 Experimental Resin 3D Printer Updated! -- Episode 452

Clem has built a giant resin based 3d printer concept in a previous video, and today it is time to put the concept upside down! The people on the element14 community gave him a lot of advice and ideas to make his idea finally work as it should! Clem builds a second iteration of his 3d printer using daylight resins and easily obtainable parts. The new Raspberry pi 4 8 GB reduces slicing times and makes for a more responsive GUI on this experimental 3d printer! Now its time for the community to take his findings and iterate for a bright future of cheap huge 3d printers!

Supplemental Content:

Episode 414: Raspberry Pi 4 Experimental Resin 3D Printer

Bill of Material:

Product Name	Manufacturer	Quantity	Buy Kit
RASPBERRY-PI Single Board Computer, Raspberry Pi 4 Model B, BCM2711 SoC, 4GB DDR4 RAM, USB 3.0, PoE Enabled	Raspberry-PI	1	Buy Now
MULTICOMP PRO 3D Printer Filament, 1.75mm Dia, Blue, TPE, 1 kg	Multicomp	1	Buy Now
PRO SIGNAL Audio / Video Cable Assembly, HDMI A Plug to Micro HDMI D Plug, 6.6 ft, 2 m, Black	PRO SIGNAL	1	Buy Now
PHOTOCENTRIC 3D Printer Resin, Grey, 1kg, 510cPs Viscosity, 1.16 g/cm³, 6% Elongation	Photocentric	1	Buy Now
RASPBERRY-PI Daughter Board, Raspberry Pi 7" Touch Screen Display, 10 Finger Capacitive Touch	RASPBERRY-PI	1	Buy Now
MIDAS TFT LCD, 7 ", 1024 x 600 Pixels, WSVGA, Landscape, RGB, 5V	MIDAS	1	Buy Now
MEAN WELL AC/DC Enclosed Power Supply (PSU), ITE, 1 Outputs, 50.4 W, 12 V, 4.2 A	MEAN WELL	1	Buy Now
MULTICOMP Axial Fan, 12 V, DC, 60 mm, 33.05 dBA, 18.84 cu.ft/min	MULTICOMP	3	Buy Now
MEAN WELL AC/DC Enclosed Power Supply (PSU), ITE, 1 Outputs, 15 W, 5 V, 3 A	MEAN WELL	2	Buy Now
TRINAMIC Evaluation Board, TMC2209 SilentStepStick, 2-Phase Motor Driver	TRINAMIC	1	Buy Now
NANOTEC Stepper Motor, High Torque, DC, 0.5 N-m, 1.8 A, Two Phase, 1.75 ohm, 3.3 mH	NANOTEC	1	Buy Now
OMRON Microswitch, Snap Action, Hinge Roller Lever, SPDT, Solder, 5 A	OMRON	1	Buy Now

Additional Parts:

Product Name
Aluminium Extrusion for the Frame
PMMA-XT for the Vat
PMMA/Acrylic for the Case
MAYER MOVES DEVKIT available at Aisler.net on demand

Attachments:

ResinPrinter2.0_Resources.zip

Raspberry Pi 4 Experimental Resin 3D Printer Updated!

element14 Presents | About Clem | Project Videos

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Top Comments

mayermakes over 3 years ago in reply to antcam

No, haven't worked on that project since Part2
Exposure settings are dependent on the individual needs of each single resin and light source, so no information that Icould gather would apply to someone elses machine.
the light source is switched on and off inbetween layers at set times that are determined in the slicer.(curing time, curing delay/mask delay and so on)
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antcam over 3 years ago

Hi, any progress with the parameters for the exposure times?
I would like to know if you are continuosly printing or you have to switch on/off the exposure source and move the piece downwards for the resin to flow over it and keep the exposed surface correctly covered in liquid resin.

Good project !
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celcius1 over 4 years ago

Have you tried reaching out to the developers of nanoDLP so you can adjust the code to be more suitable to your requirements?
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DAB over 4 years ago in reply to mayermakes

I am thinking you will get better print results with an even layer of resin to start each layer.

DAB
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mayermakes over 4 years ago in reply to DAB

considered yes, but I focused on making it pritn at all first.
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DAB over 4 years ago

Good update Clem.

Have you considered using a small vibrator to disperse the fluid over the surface evenly?

DAB
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mayermakes over 4 years ago in reply to celcius1

Nobody apart from the devs knows how nanodlp does access the screen, the only options you have are HDMI1 and the disply connector, yo ucant configure it to use any other outputs, I had to trick it to even run on a Pi4 as it expects only one hdmi output and wont show anything if two are present and not previousli configured to use hdmi1. (on the pi3b+ its HDMI1 and the p4 had HDMI0 and HDMI1_>it defaults to 0 which is not recognized by nanodlp)
the software is not open source so i can look into it.
the display for sure is salvageable for other projects.
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celcius1 over 4 years ago in reply to davedarko

I Did a little bit of investigation and as long as it is a 40pin flat cable they all appear to be the same standard arrangement and the spec sheet did not list that specific detail but if the tft module Component of the Midas screen uses that flat 40 pin connector, then it’s possible to salvage the screen.
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celcius1 over 4 years ago in reply to mayermakes

When the RPi is configured using the GPIO for the connection to the screen how does the OS see the screen?

if it is a connected display won’t the software still be able to see it?
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davedarko over 4 years ago in reply to celcius1

Hehe, that was in the kit we got for the hacklikeheck contest not sure if these are compatible though, as the flat cables of the displays vary so much.
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